Automation System
Direct Numerical Control means:

complete elimination of a need for a human operator.
None of these
using several computers to control one large machine
eliminating computers from the manufacturing process
using one computer to control several machines

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Automation System
In raster-scan colour monitors, colour can be intensified by:

None of these
using an in-line gun arrangement with a solid metal mesh
having each electron gun controlled by a composite signal
grouping the phosphor dots in a circular pattern
having each electron gun controlled by separate signal

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